DE202014106227U1 - packaging device - Google Patents

Abstract

Packaging device for highly compressed and with a strapping (3) provided pressed bales (2) made of a fiber material, characterized in that the packaging device (1) at least one hood Stretcher (13) with a raisable and lowerable Dehnrahmen (16) for attaching a Dehnhaube (18 ) on the press bale (2), wherein on the Dehnrahmen (16) a contact sensor (19) with a lifting device (20) is arranged, which detects a faulty positioned press bale (2) by contact when lowering the Dehnrahmens (16).

Description

The invention relates to a packaging device and a baling system equipped therewith with the features in the preamble of the independent device claims.

From the WO 88/09748 A1 and the DE 40 15 642 A1 It is known to package a pressed bales of a fiber material within a baler and to fix by strapping. The packaging consists of a bottom foil and a cover foil, which are beaten and applied around the bale. In addition, a belly bandage can be attached. This film packaging is usually under the strapping. The packaging and the strapping are applied at a time when the pressed bales are still clamped by the under a very high pressure of eg several hundred tons between press dies. Such pressed bales have a very high compression and tend after expansion to expand. The packaging and the fixation must be stable accordingly.

From the DE 19 51 113 A1 It is known to replace the aforementioned film packaging with two or three foils by two bags of a flexible and weldable plastic. Here, the bale material is introduced into the stacked bags and compacted in the bags with high pressure. The bags are welded at the overlapping points in the area of the lower press ram. Subsequently, the pressed bales and the bag package are strapped. Again, the packaging must take place within the baler. The sacks are adapted to the bale shape and consist of a dimensionally stable material, wherein for the filling and pressing process of a sack of compressed air must be inflated.

It is an object of the present invention to show a better packaging technique.

The invention solves this problem with the features in the independent device claims. The claimed contact sensors on the stretching frame has the advantage that any incorrect positions of the pressing bale can be detected timely and reliable in the hood application. A contact sensor system works reliably even with pressed bales with a non-uniform geometry. It is also not irritated by any lateral projections, such as protruding fiber bundles or the like. She reacts to the massive body of the press bale. It can thereby have advantages over contactless sensor systems, e.g. Photocells, have.

The contact sensor can be brought by a lifting device as needed in a downwardly extended process position, where it is located at a distance below the Dehnrahmen and detects a possible malposition of the press bale in time, so reliably prevents a collision of the Dehnrahmens with the pressed bale and a resulting frame damage can be. Towards the end of the lowering of the Dehnrahmens the contact sensor can be raised again and approached to the Dehnrahmen. As a result, the stretch frame can travel far down over the pressed bales and almost to the bottom of the bale.

The pressed bales can be provided and positioned on a conveyor extending through the hood stretcher on a so-called bale receiver. The conveyor can be precisely controlled and positioned accordingly. By means of the conveyor, the pressed bales can also be transported to a neighboring bale turner.

The packaging of the press bale is formed by two elastic Dehnhauben, which are applied successively and from different, in particular defaced directions on the pressed bales and thereby wrapped tightly together and from all sides. By a Ballenwender the pressed bales can be turned for this purpose as needed. In the preferred embodiment, the bale turner has a pivotable and movable gripper fork and a rotating device. This has advantages in terms of a small footprint and a simple and easily controllable design.

In a variant, both stretch hoods can be applied successively to the press bale by a single hood stretcher, wherein the bale turner is arranged in front of or behind the hood stretcher in the conveying direction. The conveyor is reversing in this case and can transport the pressed bales between the hood stretcher and the bale turner back and forth.

In another variant, the stretch hoods are applied successively by two hood stretters which are spaced apart in the conveying direction, the bale turner being arranged between the two hood stretters. This variant is very fast and powerful. It has great advantages in connection with high-performance baling plants, which have a large number of baling chained balers.

In the Ausführungsbeisielen further advantageous embodiments of the invention are given.

The invention is illustrated by way of example and schematically in the drawings. In detail show:

1 FIG. 2: a schematic view of a baling plant with several balers and a common packaging device in plan view, FIG.

2 : A broken and enlarged side view of the packaging device according to arrow II of 1 .

3 : a variant of the baling plant and the packaging device of 1 in plan view,

4 a perspective view of the packaging device and

5 : An end view of the packaging device according to arrow V of 4 ,

The invention relates to a packaging device ( 1 ) for highly compacted pressed bales ( 2 ). The invention further relates to a with at least one such packaging device ( 1 ) equipped baling plant ( 5 ) with several balers ( 6 ).

1 shows in a schematic embodiment, a baling plant ( 5 ), which has several juxtaposed balers ( 6 ) having. In the baling press bales ( 2 ) between press punches under very high pressure and with pressing forces of eg 300 to 500 tons produced and compacted.

The bale material consists of fiber materials, in particular synthetic fibers in a cut form as so-called staple fibers or in a longer form than so-called tow. Alternatively, the bale material may be made from natural fibers, e.g. Cotton or the like, in cut or long form. Also pulp is suitable. Furthermore, waste, e.g. Textile waste from a rice plant, but also other fiber materials are used.

The bale material is stored in the baler ( 6 ) and compressed into a pressed bale ( 2 ) shaped. The balers ( 6 ) can be designed for this purpose in any suitable manner as a vertical or horizontal press, for example according to the DE 34 32 832 A1 . EP 1 120 237 A2 or WO 88/09748 A1 ,

The high density pressed bales ( 2 ) can with strapping ( 3 ) made of plastic or steel bands, which give them a permanent shape and a popping of the unloaded pressed bales ( 2 ) prevented before the subsequent packaging. The strapping ( 3 ), for example, during baling around the pressed bale ( 2 ). The strapping ( 3 ) can be used by a strapping device ( 10 ) either inside or outside the baler ( 6 ).

In the illustrated embodiments of 1 and 3 are the balers ( 6 ) via a conveyor ( 7 ) with a common packaging device ( 1 ) connected. The conveyor ( 7 ) may be formed in any suitable manner. In the embodiment shown, on the lined balers ( 6 ) parallel output conveyors ( 8th ) arranged at one end of a discharge device ( 11 ) for bale removal from the baler ( 6 ) and at the other end to a cross conveyor ( 9 ) are connected. The cross conveyor ( 9 ) forms a kind Rangierbahn and is in turn to a conveyor ( 12 ), with which the pressed bales ( 2 ) to the packaging device ( 1 ) and from there to a delivery station or the like. Be transported. The conveyors may be designed constructively in any suitable manner. The transport and conveying area between the balers ( 6 ) and the packaging device ( 1 ) is referred to as the feed area and extends into the devices ( 1 . 6 ).

In the exemplary embodiments shown, the conveyors ( 8th . 9 . 12 ) designed as a belt conveyor with two or more parallel, circumferentially controlled driven conveyor belts. At the sponsors ( 8th . 9 . 12 ) can be arranged detection devices for the Pressballenposition, for example, non-contact sensors, in particular Lichtschrankren have.

In a modification of the embodiment shown, each baler ( 6 ) own packaging device ( 1 ) to have. Furthermore, within the baling plant ( 5 ) Press groups are formed, each of which a packaging device ( 1 ) assigned. In the embodiment shown and the aforementioned variants, the packaging device ( 1 ) outside the one or more balers ( 6 ) arranged.

The packaging device ( 1 ) has one or two hood stretcher ( 13 . 13 ' ) and a bale turner ( 24 ) on. In the packaging facility ( 1 ), a packaging ( 4 ) on the pressed bale ( 2 ) appropriate. It is designed as a casing, which the pressed bales ( 2 ) surrounds tightly on all sides. The packaging ( 4 ) is made of two stretch hoods ( 18 . 18 ' ) formed successively from different directions on the pressed bale ( 2 ) are applied. In between, the pressed bales ( 2 ) with a bale turner ( 24 ) turned. The previously from the bale top side attached Dehnhaube ( 18 ) then covers the bottom and the surrounding ones Side walls of the press bale ( 2 ), which is then removed from the second expansion hood ( 18 ' ) is enclosed at the top and again on the side walls. The jacket lengths of the expansion hoods ( 18 . 18 ' ) are each shorter than the bale height. The during application on the pressed bales ( 2 ) elastically shrinking hood walls lie close to each other and to the side walls of the press bale ( 2 ).

The hood stretcher ( 13 . 13 ' ) brings a Dehnhaube ( 18 . 18 ' ) on the pressed bale ( 2 ) at. He has for this purpose a width-adjustable stretch frame ( 16 ), which by means of a lifting device on a Pressballen ( 2 ) can be moved vertically up and down. The pressed bales ( 2 ) is on a bale receiver on the conveyor ( 12 ), which passes through the hood stretcher ( 13 . 13 ' ). The hood stretcher ( 13 . 13 ' ) further comprises a holder with a rotatable coil ( 14 ) and a feeder with a separating and welding device.

The expansion hood ( 18 . 18 ' ) consists of a stretch-elastic material, which elastically shrinks after stretching itself on the pressed bale ( 2 ) contracts. The hood material may be, for example, a stretch-elastic plastic, in particular a polyethylene. Plastic films made of a long-chain low-density polyethylene, in particular LLDPE, are particularly favorable.

The expansion hood ( 18 . 18 ' ) has a bag-like shape with an opening, a closed bottom and a coat. The expansion hood ( 18 . 18 ' ) on the hood stretcher ( 13 . 13 ' ) made of a plastic film in tube form. The frontally open hose is in this case from the coil ( 14 ) With a gripper of the feeder pulled up and then cut by separating and welding device in the predetermined length and welded at this end.

The bag-shaped piece of tubing ( 15 ) is then from the feeder to the Dehnrahmen ( 16 ) and received there and stretched, wherein the bottom part of the bag-shaped hose piece ( 15 ) at the bottom of the stretch frame ( 16 ) and to the pressed bales ( 2 ) points. The side walls of the hose piece ( 15 ) are on the side wall of the Dehnrahmens ( 16 ) held in reefed form. The hood opening points upwards.

The clamped and stretched hose piece ( 15 ) forms the Dehnhaube ( 18 . 18 ' ), which is then followed by a lowering movement of the stretching frame ( 16 ) on the pressed bale ( 2 ) is reared. The base of the widened stretch frame ( 16 ) is slightly larger than the surface of the press bale ( 2 ). During the lowering movement, the hood bottom is placed on the bale top side and the lateral hood walls on the side walls of the press bale (FIG. 2 ) raised. You are doing from the side walls of the Dehnrahmens ( 16 ) and via stripping cables ( 17 ) at the bottom of the stretch frame ( 16 ) and to the side walls of the press bale ( 2 ).

2 shows the stretch frame ( 16 ) with the hose piece ( 15 ) in the raised starting position and in a lowered position on the pressed bales ( 2 ), with just a Dehnhaube ( 18 ' ) on the pressed bale ( 2 ) is attached.

As 2 . 4 and 5 clarify, is on Dehnrahmen ( 16 ) a contact sensor ( 19 ) arranged during lowering of the Dehnrahmens ( 16 ) a wrongly positioned pressed bales ( 2 ) detected by contact. The contact sensor system ( 19 ) is at one with the Dehnrahmen ( 16 ) associated lifting device ( 20 ) arranged.

The lifting device ( 20 ) positions the contact sensor ( 19 ) in the 2 shown starting position and at the beginning of the lowering of the Dehnrahmens ( 16 ) at a distance below the stretch frame ( 16 ). If a pressed bale ( 2 ) is laterally offset or crooked, contacts the contact sensor ( 19 ) during the lowering movement of the pressed bales ( 2 ) and outputs a corresponding contact signal to the control of the hood stretcher ( 13 . 13 ' ). In response to this signal, the lowering movement of the stretching frame ( 16 ) stopped. In addition, an audible and / or visual warning signal is emitted. Maintenance personnel can then correct the pressed bale position or the pressed bales ( 2 ) without packaging.

The contact sensor system ( 19 ) has a contact frame ( 21 ), which has a rectangular cross section and whose cross section is slightly larger than the cross section of the widened expansion frame ( 16 ). The contact frame ( 21 ) is supported by several horizontally arranged contact elements ( 22 ) with sensors ( 23 ) educated. The contact frame ( 21 ) is connected to the lifting device ( 20 ) and is located at the lower end.

In the embodiment shown, the contact elements ( 22 ) are formed as contact chains, which at one or both ends with a sensor ( 23 ) are connected. This may be a force sensor, one from the contact element ( 22 ) is detected when the contact chain ( 22 ) on the pressed bale ( 2 ) and tense. The lifting device ( 20 ) may have, for example, four vertical lifting pistons, at whose extendable ends the sensors ( 23 ) and the contact elements ( 22 ) are arranged.

Alternatively, an embodiment of the contact elements ( 22 ) as contact cables or contact rods possible. Furthermore, the sensors ( 23 ) on the contact elements ( 22 ) and can be designed, for example, as pressure-sensitive sensor strips or series arrangement of pressure or force sensors.

As 2 clarified, can in a lowered operating position when mounting the Dehnhaube ( 18 . 18 ' ) on the pressed bales ( 2 ) the lifting device ( 20 ) with the contact sensor ( 21 ) raised again and to the lower edge of the Dehnrahmens ( 16 ). The stretch frame ( 16 ) can thus go as far as possible down to the bale intake.

The bale turner ( 24 ) is in the first variant of the packaging device ( 1 ) from 1 and 2 in the conveying direction before or after the individual hood stretcher in this embodiment ( 13 ) arranged. As 2 clarifies, with the stretch frame ( 16 ) first the first expansion hood ( 18 ) from above on the pressed bales. Then the pressed bales ( 2 ) with the reversing conveyor ( 12 ) to the Ballenwender ( 24 ), turned there by 180 ° and then back into the hood stretcher ( 13 ) transported back. Then the second expansion hood ( 18 ' ) from above on the free bale top and on the side walls of the first Dehnhaube ( 18 ) are applied. The one with the finished packaging ( 4 ) provided pressed bales ( 2 ) can then be retrieved from the conveyor ( 12 ) are transported away.

In the variant of 3 are two hoodstretcher ( 13 . 13 ' ) arranged in the conveying direction at a distance one behind the other, wherein between them the Ballenwender ( 24 ) on the conveyor ( 12 ) is arranged. The promoter ( 12 ) extends through the spaced hood stretcher ( 13 . 13 ' ). In the first hood stretcher ( 13 ), the first expansion hood ( 18 ), wherein then the pressed bales ( 2 ) in the Ballenwender ( 24 ) and then in the second hood stretcher ( 13 ' ) the second expansion hood ( 18 ' ) to form the packaging ( 4 ) is applied.

The bale turner ( 24 ) may be designed constructively in any suitable manner. In the embodiments shown, it consists according to 4 and 5 from a swiveling gripping fork ( 25 ) on a rotary device ( 26 ) next to the conveyor ( 12 ) is arranged. The gripping fork ( 25 ) can with their fork arms over the Pressballen ( 2 ) and then moved together. The fork arms clamp the pressed bales ( 2 ) on its front sides. Then the bale with the gripping fork ( 25 ) and lifted off the conveyor ( 12 ) solved. He is held in an inclined position or vertically.

The turning device ( 26 ), the gripping fork ( 25 ) with the recorded pressed bales ( 2 ) then turn 180 °. The pressed bales ( 2 ) is thereby turned. Then the gripping fork ( 25 ) back to the conveyor ( 12 ), the pressed bales ( 2 ) and then in their in 4 and 5 be moved back home position shown.

In the feed area, a monitoring device can be arranged which checks the pressed bale quality and determines any exclusion. In this way, it can be determined in particular whether a pressed bale ( 2 ) is not sufficiently fixed and broken up. Such a pressed bale ( 2 ) can be transported via the conveyor ( 7 ) are discarded. If necessary, it can also be strapped or otherwise fixed at an additional station. Other exclusion reasons can be remedied in such an additional station (not shown).

Behind the packaging device ( 1 ) may be arranged in the conveying direction, a further monitoring device which checks the quality of packaging and in particular determines whether the one or more Dehnhauben ( 18 . 18 ' ) close to the pressed bales ( 2 ) or whether they are broken or severed. In such a case, the pressed bales ( 2 ) via a suitable additional conveyor (not shown) returned to the feed area and again the packaging device ( 1 ).

Variations of the embodiments shown and described are possible in various ways. In particular, the features of the various embodiments and the abovementioned modifications can be arbitrarily combined with each other, in particular also be reversed.

The stretch hoods ( 18 . 18 ' ) can be manufactured and provided elsewhere. The stretch hoods ( 18 . 18 ' ) can also be applied to the pressed bale in other ways ( 2 ) are applied. The slipping of the type described has the advantage, however, that the weld at the hood bottom is located on the inside and the pressed bales ( 2 ) is swept. It is thus protected against negative external influences. Furthermore, the balers ( 6 ) be constructed and arranged in any other way constructive. The kinematics of the relative movement of pressed bales ( 2 ) and stretch frame ( 16 ) can be varied by both are moved relative to each other in the hood application or alternatively the pressed bales ( 2 ) relative to the resting stretch frame ( 16 ) and the expansion hood ( 18 . 18 ' ) is moved. Also, the Dehnhaubenmaterial can vary and does not have to be plastic film.

LIST OF REFERENCE NUMBERS

1

 packaging device

2

 bales

3

 Fixation, strapping

4

 Packaging, serving

5

 Baling plant

6

 baler

7

 Conveyor

8th

 output conveyor

9

 cross conveyor

10

 strap application

11

 unloader

12

 promoter

13

 hood Stretcher

13 '

 hood Stretcher

14

 coil

15

 hose Connector

16

 stretching frame

17

 Abstreifseil

18

 Stretch hood, stretch film hood

18 '

 Stretch hood, stretch film hood

19

 contact sensor

20

 lifting device

21

 contact frame

22

 Contact element, contact chain

23

 sensor

24

 bale turner

25

 cross fork

26

 rotator

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• WO 88/09748 A1 [0002, 0021]
• DE 4015642 A1 [0002]
• DE 1951113 A1 [0003]
• DE 3432832 A1 [0021]
• EP 1120237 A2 [0021]

Claims (15)

Packaging device for highly compressed and with a strapping ( 3 ) provided pressed bales ( 2 ) of a fiber material, characterized in that the packaging device ( 1 ) at least one hood stretcher ( 13 ) with a raisable and lowerable stretch frame ( 16 ) for attaching a Dehnhaube ( 18 ) on the pressed bale ( 2 ), wherein on Dehnrahmen ( 16 ) a contact sensor ( 19 ) with a lifting device ( 20 ) is arranged, which when lowering the Dehnrahmens ( 16 ) a wrongly positioned pressed bales ( 2 ) detected by contact. Packaging device according to claim 1, characterized in that the contact sensor ( 19 ) a contact frame ( 21 ) of a plurality of horizontally disposed contact elements ( 22 ) with sensors ( 23 ) is formed. Packaging device according to claim 2, characterized in that the contact frame ( 21 ) has a rectangular cross-section. Packaging device according to claim 2 or 3, characterized in that the contact frame ( 21 ) with the stretch frame ( 16 ) arranged lifting device ( 20 ) connected is. Packaging device according to claim 2, 3 or 4, characterized in that the contact elements ( 22 ) are formed as contact chains, which at the end with a sensor ( 23 ) are connected. Packaging device according to one of claims 1 to 5, characterized in that the packaging device ( 1 ) a bale turner ( 2 ) for pressed bales ( 2 ) having. Packaging device according to claim 6, characterized in that the bale turner ( 24 ) a pivotable gripping fork ( 25 ) mounted on a rotating device ( 26 ) is arranged. Packaging device according to one of claims 1 to 7, characterized in that the packaging device ( 1 ) a conveyor ( 12 ) for pressed bales ( 2 ) having. Packaging device according to claim 6, 7 or 8, characterized in that the packaging device ( 1 ) a single hood stretcher ( 13 ) with a bale turner ( 2 ) and a reversing conveyor ( 12 ), wherein the reversing conveyor ( 12 ) a pressed bale ( 2 ) between the hood stretcher ( 13 ) and the bale turner ( 2 ) transported back and forth. Packaging device according to claim 6, 7 or 8, characterized in that the packaging device ( 1 ) two hood stretcher ( 13 . 13 ' ) and a bale turner ( 2 ) having. Packaging device according to one of the preceding claims, characterized in that the stretch frame ( 16 ) is adjustable in width and stripping ropes ( 17 ) for a on the stretch frame ( 16 ) received piece of tubing ( 15 ) for forming the expansion hood ( 18 . 18 ) having. Baler with at least one baler ( 6 ) for producing high-density and with a strapping ( 3 ) provided pressed bales ( 2 ) and at least one packaging device ( 1 ) for the pressed bales ( 2 ), characterized in that the packaging device ( 1 ) a hood stretcher ( 13 ) with a raisable and lowerable stretch frame ( 16 ) for attaching a Dehnhaube ( 18 ) on the pressed bale ( 2 ), wherein on Dehnrahmen ( 16 ) a contact sensor ( 19 ) with a lifting device ( 20 ) is arranged, which when lowering the Dehnrahmens ( 16 ) a wrongly positioned pressed bales ( 2 ) detected by contact. Baler according to claim 12, characterized in that the baling plant ( 5 ) several balers ( 6 ), to which a common packaging device ( 1 ) assigned. Baler according to claim 13, characterized in that the baling plant ( 5 ) a conveyor ( 7 ) with several output conveyors ( 8th ) and a common cross conveyor ( 9 ) for connecting the lined balers ( 6 ) with the common packaging device ( 1 ) having. Baler according to claim 12, 13 or 14, characterized in that the packaging device ( 1 ) is designed according to one of claims 2 to 11.

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